Traditional Internet access methods like dial-up were so slow that host computers were connected to the dial-up(71)at the custom

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问题 Traditional Internet access methods like dial-up were so slow that host computers were connected to the dial-up(71)at the customer premise over slow(72)ports. PPP was designed to run directly over these serial links. But with the advent of broadband Internet(73)technologies such as ADSL and cable modems there has been a considerable increase in the bandwidth delivered to the end users. This means that the host computers at the customer premise connect to the(74)or cable "modem" over a much faster medium such as Ethernet. It also means that multiple(75)can connect to the Internet through the same connection.,

选项 A、cables
B、hosts
C、servers
D、modems

答案B

解析 传统的Internet接入方法(例如拨号接入)速度很慢,这种方式要求客户端主机通过低速串口连接到拨号Modem。在串行链路上运行PPP协议。但是随着宽带Internet接入技术——例如ADSL和线缆调制解调器的发展,提供给端用户的带宽已经有相当大的增加。这意味着客户端主机可以连接到ADSL或者线缆调制解调器,从而获得比以太网还要快得多的传输介质。这也意味着多个主机可以通过同一连接访问Internet。
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